?erse gearing mechanism.



R. M. LAMPMAN.

FORWARD AND REVERSE BEARING MECHANISM.

APPucAlou mw Aua.1.19|6.

Ptllted Feb. 13, 1917.

v lol'l'lum ROBERT M. LAMPMAN, OF ANCASTER, ONTARIO, CANADA.

FORWARD AND REVERSE GEARING MECHANISM.

Specication of Letters Patent.

Patented Feb. 13, 1917.

Application filed August 7, 1916. Serial No. 113,603.

To all whom it may concer/n:

Be it known that I, ROBERT M. LAMPMAN, a subject of the King of Great Britain, residing at Ancaster, in the county of Wentworth and the Province of Ontario, Canada, have invented new and useful Forward and Reverse Gearing Mechanism, of which the following is a specification.

My invention relates to improvements in forward and reverse gearing mechanism especially adapted for operating hoisting machinery, but may be applied to other and various purposes if desired, and consists essentially of a base and frame, a drinn journaled in the frame and operated by means of a system of beveled gearing, a clutch for the purpose of reversing the drum, together with novel means for shifting the clutch.

The invention has for its objects, lirst, to provide a machine of the specified class which will quickly and efficiently respond to the operator thereof, and second, to afford facilities whereby the operation of the machine may be effectively accomplished from a distance.

I attain these objects by the mechanism illustrated in the accompanying drawing, in which Figure 1 is a plan of the entire machine, showing the drum devoid of rope, Fig. 2 is a side elevation of the same. showing the rope attached and wound on the drum, and the clutch in one operating position, Fig. 3 is an enlarged, detailed top view of the drum operating machinery, showing the clutch in neutral position, Fig. 4 is an enlarged detailed side view of the clutch and levers in neutral position, and Fig. 5 is an end view of Fig. 4.

Similar characters of reference refer to similar parts throughout the several views.

Reference being had to the accompanying drawing, the base pieces A, B and C. and the cross pieces D, E, and F, constitute the framework of the machine, H is a horizontal shaft. journaled longitudinally in the bearings 2, which bearings are substantialhT mounted and secured to the respective cross pieces D, E and F, and J, is a horizontal shaft, journaled transverse of the machine in the bearings 3 which are mounted on and secured respectively to the base pieces A and B.

A drum 4 with flanges 5 is rigidly secured to the shaft H between the cross pieces E and F, and is adapted to wind and unwind a length of rope G. (.)ne end of said rope is secured to the drum Lt, and the opposite end passes upward and over pulley wheels, 7 and 8 which are usually mounted in the loft of a barn or other striufture, and form part of a hoisting apparatus.

The said hoisting apparatus is old and forms no part of my invention, hence is not shown in the drawing. K and L are bevel gear wheels loosely journalcd on the shaft H between the cross pieces D and E, and are operated by means of a larger bevel gear wheel Mwhich meshes therewith, and which is rigidly secured to one end of the shaft J as illustrated. The wheel M is Voperated by means of power delivered to a drive wheel N, which wheel is rigidly secured to the outer end of the shaft J.

A reversible clutch arrangement on the shaft H between the gear wheels K and L, is adapted to regulate and control the winding drum e, and is clearlyT illustrated in detail in Figs. 3, ft and 5 of the drawing. The said clutch consists of a central part 9, adapted to slide in each direction on the shaft 4f by means of a lever P, and end parts l() and 1Q which are rigidly secured to the gear wheels K and L respectively, and form part of the same, and continuously rotate therewith.

The portion of the shaft H between the end parts 10 and i2 of the clutch.` is provided with an integral or detachable longitudinal rib 13, which rib fits into a respective groove in the core of the central part 9 of the clutch, hence, the shaft H must revolve with the said part D of the clutch.

Thilo the work is being carried on, the gear wheels K. L and M are continuously revolving, and it is apparent that the wheel K revolves in the opposite direction to the wheel L. Therefore, when the central part 9 of the clutch is shifted from neutral, as

shown in Fig. 3 of the drawing, in connec' tion with the end part 10 of the clutch as shown in broken lines in Fig. 2 of the drawing, the drum l turns in the direction to wind the rope; and when it is shifted into connection with the end part 12 of the clutch, the drum turns in the direction to unwind the rope. It will be apparent that when the central part 9 of the clutch is at neutral, the drum will be stationary.

The clutch shift lever P is fulcrumed to a bearing 14 which is rigidly secured to the floor, or to the lower part of the frame; and is pivotally connected at cach side to a ring 15, shown in Fig. 5 of the drawing. The said ring lits loosely in an annular groove in the central part 9 of the clutch. This arrangement is adapted to afford sufficient leverage to said part 9, at the same time permitting it to freely revolve.

A partial covering is built over the gear and clutch, consisting of ends 16, sides 17, and top 18.

To afford means for retaining the center part 9 of clutch in neutral position when the machine is required to be idle, but that will not prohibit it from engaging with the end parts 10 and 12 of the clutch When desired, l employ two auxiliary levers 19 pivotally connected one on each side to the lever P. When the clutch is neutral the levers P and 19 are perpendicularly disposed and parallel each to the other. The said levers extend through and are slidable in respective slots 22 in a plate 21 in the top 18 of the frame. The central ends of the slots 22 through which each a lever 19 passes, terminate in proximity to the central part of the plate 21, the opposite ends of said slots extending each in opposite directions, and terminate one in alinement with each termination of the central slot. Hence, when the clutch is neutral, the levers 19 are in contact one with the central end of one outer slot, and one with the central endof the other outer slot. Therefore it can be seen that when the lever P together with one of the levers 19 is drawn in one direction, the other lever 19 is not per mitted to pass the central end of its respective slot 22, hence it tends to tension the other said levers toward neutral position, and when said levers are loosened, they immediately resume neutral position. 1n order to enable the clutch to be shifted by means of the auxiliary levers 19, lateral stop members 23 are secured to the lever P and adapted to engage with their respective lever 19 when the same is drawn over into Contact therewith, thereby drawing the lever P with it.

A series of ropes or cords 24; are secured to the upper ends of the corresponding levers 19 and P, in order that the machine may be operated by the same person who is attending to the machine or apparatus which is being operated by my invention.

The cords, which are adapted to shift the levers in the opposite direction to the operator, are passed around pulleys 25 which are secured to the upper end part of a vertical post 26, which post is rigidly secured to the end 1G, of the covering as shown.

Having fully described my invention, what I claim and desire to secure by Letters Patent, is:-

1. In forward Vand reverse gear mechanism, a lirst shaft, a second shaft, a gear secured to the iirst shaft, pinions provided with clutch portions loose on the second shaft and meshing with the gear on the first shaft, an intermediate clutch member splined to the second shaft and adapted to engage the pinion clutch portions, a plate having a central slot and two parallel lateral slots, one end of each lateral slot terminating in transverse alinement with the corresponding end of the central slot, and the opposite end of the lateral slots terminating in proximity to the middle part of the central slot, a shifting lever loosely connected to the said clutch member, fulcrumed beyond the same and extending through and slidable in said central slot, lateral auxiliary levers pivotally connected to said shifting lever and extending through and slidable one in each said lateral slot, lateral stop members secured to said shifting lever and adapted to engage each a lateral lever, for the purpose specified.

2. In forward and reverse gearmechanism, a first shaft, a second shaft, a gear secured to the first shaft, pinions provided with clutch portions loose on the second shaft and meshing with the gear on the first shaft, an intermediate clutch member splined to the second shaft and adapted to engage the pinion clutch portions` a plate having a central slot and two parallel lateral slots, one end of each lateral slot terminating in transverse alinement with the corresponding end of the central slot.` and the opposite ends of the lateral slots terminating in proximity to the middle part of the central part, a shifting lever loosely connected to the splined clutch member, fulcrumed beyond the saine and extending through and slidable in said central slot, lateral auxiliary levers pivotally connected to said shifting lever and extending through and slidable one in each said lateral slot, lateral stop members secured to said shifting lever and adapted to engage each a lateral lever, and a series of ropes connected to said levers, as and for the purpose set forth.

ROBERT M. LAMPMAN.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

